Nas documentary to open Tribeca

The film, Time Is Illmatic - which is about the music star's 1994 debut album Illmatic - will be screened at the New York festival on April 16.

Nas will perform the album in full after the premiere.

In recent years Tribeca has increasingly turned to music documentaries to begin its film festival.

Last year's event started with the Brooklyn indie band the National and the documentary Mistaken For Strangers. In 2011, Cameron Crowe's Elton John and Leon Russell documentary, The Union, was followed by a set from Elton.